Satellite anomaly monitoring system based on blind source magnetic field system

Abstract

The application discloses a satellite abnormality monitoring system based on a blind source magnetic field system, relates to the technical field of satellite platform state monitoring, and comprises a satellite platform, wherein a solar sail is arranged on the satellite platform; the satellite platform is further provided with a magnetic field sensing system and an intelligent data processing system; the magnetic field sensing system comprises one main magnetic field sensor and at least six auxiliary magnetic field sensors; and the main magnetic field sensor and the auxiliary magnetic field sensors are arranged on the satellite platform. In the application, the magnetic field sensing system is used to comprehensively monitor the working state changes of different units of the platform. Then, the intelligent data processing system is used to analyze the blind source signals of the comprehensive magnetic field data based on a blind source magnetic field analysis technology, so that the working states of the satellite and the units are monitored in real time. The method can be used for monitoring and evaluating the health condition of the satellite platform, is also suitable for real-time acquisition of residual magnetism and magnetic disturbance signals of the satellite platform, and can comprehensively and in real time acquire the comprehensive magnetic field data of the satellite platform.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of satellite platform state monitoring, and particularly relates to a satellite anomaly monitoring system based on a blind source magnetic field system. BACKGROUND

[0002] During on-orbit operation, uncertain factors such as current in the satellite body and the load unit will generate various unstable interference magnetic fields. These interference magnetic fields are related to the materials of the satellite components, the working state, the background magnetic field and the motion attitude of the satellite components, etc. The working current of each electronic unit on the satellite platform and the current loop change with the change of the working state. Therefore, the working state of the platform can be monitored by monitoring the magnetic field change of the satellite platform, and then the health state of the satellite platform and abnormal analysis and evaluation can be monitored.

[0003] The present application provides a satellite anomaly monitoring system based on a blind source magnetic field system. The designed multi-sensor magnetic field detection and blind source magnetic field analysis technology can obtain comprehensive magnetic field data of the satellite platform in real time. That is, a plurality of magnetic field sensors are installed on different areas of the satellite platform, the magnetic field sensors are evenly distributed on the satellite platform as much as possible, and are arranged in key single machine load areas, which can sense the current and current loop change of the electronic unit in the platform, so as to monitor the working state change of the platform in all directions. Then, the intelligent data processing system is used to solve and analyze the comprehensive magnetic field data based on the blind source magnetic field analysis technology, and the state of the satellite and each single machine is "nuclear magnetic resonance" in real time. This method can be used for health monitoring and evaluation of the satellite platform, and is also suitable for extraction of residual magnetism and magnetic disturbance signals of the satellite platform.

[0004] The present application combines the development needs of commercial satellites, and follows the rapid, comprehensive and low-cost acquisition and analysis of health signals of future satellite platforms, and provides a satellite anomaly monitoring system based on a blind source magnetic field system. SUMMARY

[0005] The present application aims at: in order to solve the above problems, a satellite anomaly monitoring system based on a blind source magnetic field system is provided.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A satellite anomaly monitoring system based on a blind source magnetic field system, comprising a satellite platform, wherein the satellite platform is provided with a solar sail, and further comprising a magnetic field sensing system and an intelligent data processing system, the magnetic field sensing system comprises one main magnetic field sensor and at least six auxiliary magnetic field sensors, and the main magnetic field sensor and the auxiliary magnetic field sensor are arranged on the satellite platform.

[0008] Preferably, the main magnetic field sensor is installed at the center of the satellite platform, and six secondary magnetic field sensors are installed at the center of the six faces of the satellite platform, and the main magnetic field sensor and the six secondary magnetic field sensors are powered on to measure the magnetic field disturbance value at the location.

[0009] Preferably, the remaining secondary magnetic field sensors in the magnetic field sensing system are installed near the key load, and there is a certain spacing between all the secondary magnetic field sensors, and the secondary magnetic field sensors are powered on to measure the magnetic field value at the location.

[0010] Preferably, the intelligent data processing system includes a central control unit and an intelligent processing and analysis unit, the central control unit is installed inside the satellite platform, and is used for receiving satellite instructions, controlling the on-off of the magnetic field sensing system, collecting and storing magnetic field data, performing on-orbit magnetic disturbance signal monitoring, and sending magnetic field detection values.

[0011] Preferably, the intelligent processing and analysis unit is based on a signal analysis and processing method of high-order statistics, and can separate components or factors with statistical independent characteristics and non-Gaussian characteristics from blind source mixed signals.

[0012] Preferably, the intelligent processing and analysis unit is based on blind source magnetic field analysis technology to autonomously analyze all magnetic field data, process magnetic field values and satellite platform residual magnetism and magnetic disturbance detection data in real time, and separate magnetic field parameter characteristics of the working state of the satellite platform and the single load.

[0013] In summary, due to the adoption of the above technical solutions, the application has the following advantages:

[0014] 1. The satellite abnormal monitoring technology based on blind source magnetic field is used to propose a satellite health monitoring technology based on blind source magnetic field signal, the penetration and near-field nature of the magnetic field are used, and the health signals of key components in the satellite platform are calculated and evaluated quickly, comprehensively and at low cost through multi-point blind source magnetic field sensing, so that the on-orbit fault early warning and diagnosis requirements are realized.

[0015] 2. The monitoring technology proposed in the application can also be used for separation and extraction of residual magnetism and magnetic disturbance signals of the satellite platform, and the comprehensive cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A magnetic field sensing system installation schematic diagram provided by an embodiment of the application is shown;

[0017] Figure 2 A data flow block diagram of an intelligent data processing system provided by an embodiment of the application is shown.

[0018] LEGEND:

[0019] 1, main magnetic field sensor; 2, secondary magnetic field sensor; 3, intelligent data processing system; 4, satellite platform; 5, solar sail. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-2 The present application provides a technical solution:

[0022] A satellite anomaly monitoring system based on a blind source magnetic field system, comprising a satellite platform 4, a solar sail 5 provided on the satellite platform 4, a magnetic field sensing system and an intelligent data processing system 3, the magnetic field sensing system comprising one main magnetic field sensor 1 and at least six secondary magnetic field sensors 2, the main magnetic field sensor 1 and the secondary magnetic field sensors 2 are both arranged on the satellite platform 1, the magnetic field sensing system is a high-precision weak magnetic field detection technology without an extension rod, used for real-time acquisition of magnetic disturbance and residual magnetic signals of the satellite platform, and real-time satellite platform fault monitoring.

[0023] Specifically, as shown in Figure 1 and Figure 2 The main magnetic field sensor 1 is installed at the center of the satellite platform 4, and the six secondary magnetic field sensors 2 are respectively installed near the center of the six faces of the satellite platform 4, one main magnetic field sensor 1 and six secondary magnetic field sensors 2 are simultaneously powered on to measure the magnetic field disturbance value at the location, the remaining secondary magnetic field sensors 2 in the magnetic field sensing system are installed near the load of concern, there is a certain spacing between all the secondary magnetic field sensors 2, the secondary magnetic field sensors 2 are simultaneously powered on to measure the magnetic field value at the location, and matrix data real-time acquisition can be realized.

[0024] Specifically, as shown in Figure 1 and Figure 2As shown, the intelligent data processing system 3 includes a central control unit and an intelligent processing and analysis unit, the central control unit is installed inside the satellite platform 4, used for receiving satellite instructions, controlling the on-off of the magnetic field sensing system, collecting and storing magnetic field data, performing on-orbit magnetic disturbance signal monitoring and sending magnetic field detection values, the intelligent processing and analysis unit based on high-order statistics signal analysis and processing method can separate components or factors with both statistical independent characteristics and non-Gaussian characteristics from blind source mixed signals, the intelligent processing and analysis unit based on blind source magnetic field analysis technology performs autonomous analysis on all magnetic field data, real-time processing of magnetic field values and detection data of residual magnetism and magnetic disturbance of the satellite platform, separation of magnetic field parameter characteristics of the working state of the satellite platform and single machine load, the data collected by the intelligent data processing system 3 is transmitted to the storage system, based on high-order statistics signal analysis and processing method, performing on-orbit magnetic blind source data analysis algorithm, separating components or factors with both statistical independent characteristics and non-Gaussian characteristics from blind source mixed signals, and real-time outputting of each single machine working characteristic information, etc.

[0025] Based on the satellite anomaly monitoring technology of blind source magnetic field, the application proposes a satellite health condition monitoring technology based on blind source magnetic field signal, uses the penetration and near-field nature of the magnetic field, and through the perception of multi-point blind source magnetic field, can quickly, comprehensively and at low cost solve and evaluate the health signals of key components in the satellite platform, and realize the on-orbit fault early warning and diagnosis requirements.

[0026] The above description of the embodiments enables those skilled in the art to implement or use the application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A satellite anomaly monitoring system based on a blind source magnetic field system, comprising a satellite platform (4), wherein a solar panel (5) is provided on the satellite platform (4), characterized in that, It also includes a magnetic field sensing system and an intelligent data processing system (3). The magnetic field sensing system includes a main magnetic field sensor (1) and at least six secondary magnetic field sensors (2). The main magnetic field sensor (1) and the secondary magnetic field sensors (2) are both set on the satellite platform (4). The main magnetic field sensor (1) is installed at the center of the satellite platform (4), and the six secondary magnetic field sensors (2) are respectively installed in the area near the center of the six sides of the satellite platform (4). The main magnetic field sensor (1) and the six secondary magnetic field sensors (2) are powered on at the same time to measure the magnetic field disturbance value at their respective locations. The intelligent data processing system (3) includes a central control unit and an intelligent processing and analysis unit. The central control unit is installed inside the satellite platform (4) and is used to receive satellite commands, control the power on / off of the magnetic field sensing system, collect and store magnetic field data, perform on-orbit magnetic disturbance signal monitoring, and send magnetic field detection values. The intelligent processing and analysis unit performs autonomous analysis of all magnetic field data based on blind source magnetic field analysis technology, processes magnetic field values ​​and residual magnetism and magnetic disturbance detection data of the satellite platform in real time, and separates the magnetic field parameter characteristics of the working state of the satellite platform and the single-machine payload.

2. The satellite anomaly monitoring system based on a blind source magnetic field system according to claim 1, characterized in that, The remaining secondary magnetic field sensors (2) in the magnetic field sensing system are installed in the vicinity of the load of interest. There is a certain distance between all the secondary magnetic field sensors (2). The secondary magnetic field sensors (2) are powered on at the same time to measure the magnetic field value at their respective locations.

3. The satellite anomaly monitoring system based on a blind source magnetic field system according to claim 1, characterized in that, The intelligent processing and analysis unit, based on signal analysis and processing methods using higher-order statistics, can separate components or factors from blind-source mixed signals that possess both statistical independence and non-Gaussian properties.

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